A223058 Number of nX4 0..3 arrays with all horizontally or vertically connected equal values in a straight line, and new values 0..3 introduced in row major order

15, 1473, 213469, 31331820, 4606719559, 677531592132, 99653055754459, 14657362298142480, 2155865978887475959, 317093854966287823308, 46639503202294456685971, 6859935143940031077127272

Offset

1,1

Comments

Column 4 of A223062

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Formula

Empirical: a(n) = 200*a(n-1) -8673*a(n-2) +135916*a(n-3) -736271*a(n-4) -465544*a(n-5) +16580061*a(n-6) -48454316*a(n-7) +18185748*a(n-8) +126046080*a(n-9) -200199168*a(n-10) +88915968*a(n-11) for n>12

Example

Some solutions for n=3
..0..1..1..1....0..1..1..1....0..0..1..2....0..1..0..2....0..0..1..0
..1..0..2..3....2..0..3..3....3..2..2..0....2..1..3..2....1..1..0..2
..0..2..0..2....0..3..1..2....3..1..1..2....0..1..2..3....0..0..1..3

Crossrefs

Sequence in context: A350994 A206376 A331465 * A200994 A338634 A209680

Adjacent sequences: A223055 A223056 A223057 * A223059 A223060 A223061

Keyword

nonn

Author

R. H. Hardin Mar 13 2013

Status

approved